The Horse Fly -- turn the
quarterback sideways to make the fly series easier and more effective,
while allowing some true single wing plays wherein a couple of running
backs can take the snap with a running start, yet your center's head
stays up.

The following are text files, so don't try navigating from
them once you open them, just go back (left arrow):

Addendum: in the latter half of the 1990s, Rugby Union's
administration began tinkering with the officiating or interpretation
of the law (without changing the letter in that regard) regarding play
after a tackle to give the side with the ball a more definite advantage
in retaining it for further play, creating a style of play more like
that of North American football, as well as more like pre-1877 rugby,
than had been the case in quite some time. As of this writing, custom
in that regard is still being adjusted and is far from settled.